NL1030441C2 - Method and device for automatically setting speaker modes in a multi-channel speaker system. - Google Patents

Method and device for automatically setting speaker modes in a multi-channel speaker system. Download PDF

Info

Publication number
NL1030441C2
NL1030441C2 NL1030441A NL1030441A NL1030441C2 NL 1030441 C2 NL1030441 C2 NL 1030441C2 NL 1030441 A NL1030441 A NL 1030441A NL 1030441 A NL1030441 A NL 1030441A NL 1030441 C2 NL1030441 C2 NL 1030441C2
Authority
NL
Netherlands
Prior art keywords
speaker
mode
frequency
signal
low
Prior art date
Application number
NL1030441A
Other languages
Dutch (nl)
Other versions
NL1030441A1 (en
Inventor
Yong-Jun Park
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to KR20040094589 priority Critical
Priority to KR20040094589A priority patent/KR100611993B1/en
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of NL1030441A1 publication Critical patent/NL1030441A1/en
Application granted granted Critical
Publication of NL1030441C2 publication Critical patent/NL1030441C2/en

Links

Classifications

    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G3/00Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20Automatic control
    • H03G3/30Automatic control in amplifiers having semiconductor devices
    • H03G3/32Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S7/00Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30Control circuits for electronic adaptation of the sound field
    • H04S7/301Automatic calibration of stereophonic sound system, e.g. with test microphone
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/05Detection of connection of loudspeakers or headphones to amplifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00Monitoring arrangements; Testing arrangements
    • H04R29/001Monitoring arrangements; Testing arrangements for loudspeakers
    • H04R29/002Loudspeaker arrays
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04SSTEREOPHONIC SYSTEMS 
    • H04S2400/00Details of stereophonic systems covered by H04S but not provided for in its groups
    • H04S2400/09Electronic reduction of distortion of stereophonic sound systems

Description

r '

Title: Method and device for automatically setting speaker modes in a multi-channel speaker system

BACKGROUND OF THE INVENTION

This application claims the priority of Korean Patent Application No. 2004-94589 filed November 18, 2004 at the Korean Intellectual Property Office, the contents of which are incorporated herein by reference in their entirety.

1. Invention area

The present general inventive concept relates to a multi-channel speaker system and more particularly to a method and device for automatically setting a speaker mode based on the characteristics of a speaker installed in an audio and / or video system.

2. Description of the Related Art A typical home theater system ("home theater system") comprises a 5.1 channel amplifier, a digital versatile disc (DVD) player and a tuner and is used with a large screen digital television. The system can produce a high quality image using a progressive scan function and can convert a two-channel stereo sound from a video cassette recorder (VCR) or TV broadcast to 5.1 channel sound using "Dolby prologic" decoding technique.

However, the home theater system requires a user to manually set speaker modes based on the amount of speakers and the frequency characteristics of the speakers in the system.

103044tv κ 2

Figure 1 is a diagram illustrating a conventional digital signal processor for controlling a signal flow according to a manual speaker mode setting in an audio / video system.

Referring to Figure 1, a front channel, a center 5 channel, an environmental channel, an environmental rear channel, and a low frequency effect (LFE) are channel output to corresponding speakers. Here, a user sets speaker modes by selecting keys that are mounted on a remote control or a front panel of the audio / video system. The user selects from 10 two speaker modes of "Yes" or "No" with respect to a subwoofer and three speaker modes of "Large", "Small" and "None" with regard to the other speakers, based on the amount and type of speakers. In the Large mode, all audio signals in an audible frequency band (20Hz to 20KHz) are output to the speaker. In the Klein 15 mode, all middle frequency band signals and high frequency band signals are output to the speaker while low frequency band signals are output to the bass speaker or another speaker. In the No mode, there is no signal output to the speaker.

In the "Yes" mode, the low frequency band signals are output to the low frequency speaker (subwoofer) (that is, "Yes" refers to a low frequency speaker mode), and in the "No" mode, the low frequency band signals are not output to the bass speaker, but instead output to a front speaker or another speaker.

When the speaker modes are set according to the user's selection, the digital signal processor uses appropriate low pass filters (LPF) or high pass filters (high pass filters) (HPF), combining the signals based on the set 30 speaker modes, it processes an input sound for matching 3 with each speaker mode and outputs the processed sound to the corresponding speakers.

In the conventional signal processor where the speaker modes are set by the user, the conventional signal processor 5 only controls the activation of the LPFs and HPFs and does not determine whether the speakers are then properly connected. In addition, since the user must set the speaker modes directly, it is difficult and burdensome to set up a plurality of speakers. Since the speaker modes are set according to a user-made estimate, it is likely that frequency characteristics of the speakers do not correspond correctly to the correct frequency band signals. As a result, it is difficult to obtain an optimum sound effect. For example, while a system generates a low frequency signal, a speaker installed in the audio / video system may not be able to reproduce the low frequency signal. This way the low frequency signal can be lost. Moreover, if a speaker mode is set to the Large or Small mode, but no corresponding speaker is connected to the audio / video system, the user cannot hear the corresponding sound.

Summary of the invention

The current general inventive concept provides a method for automatically setting a speaker mode by determining characteristics of a speaker installed in an audio and / or video system.

The current general inventive concept also provides a device for automatically setting a speaker mode by determining the characteristics of a speaker installed in a system.

4

Additional aspects and advantages of the general inventive concept will be set forth in part in the description that follows and in part from the description, or may be learned by application of the general inventive concept.

The foregoing and / or other aspects and advantages of the present general inventive concept can be achieved by providing a method for automatically setting a speaker mode in a multi-channel speaker system, the method comprising generating a predetermined broadband signal and reproducing the predetermined broadband signal through a speaker, determining a reproducing power of the speaker for each frequency band by analyzing frequency characteristics of the broadband signal reproduced through the speaker, and setting the speaker mode of the speaker based on the certain reproduction power of the speaker.

The foregoing and / or other aspects and advantages of the present general inventive concept can also be achieved by providing a device for setting a speaker mode in an audio and / or video system with a plurality of channels, comprising an amplifier for amplifying a signal, a loudspeaker for reproducing the amplified signal received from the amplifier, a digital signal processor for generating a predetermined broadband signal, for supplying the predetermined broadband signal to the amplifier, for analyzing frequency characteristics of the predetermined broadband signal reproduced through the speaker and for setting the speaker mode of the speaker based on the analyzed frequency characteristics of the speaker, and a microprocessor for receiving information about the speaker mode set by the digital signal processor and for controlling filter and channel combinations based on the set speaker mode.

BRIEF DESCRIPTION OF THE DRAWINGS These and / or other aspects and advantages of the present general inventive concept will become clearer and more readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings of which:

Fig. 1 is a diagram illustrating a conventional digital signal processing block for controlling signal flow according to a manual speaker mode setting in an audio / video system,

Figure 2 is a block diagram illustrating an apparatus for automatically setting a speaker mode and a multi-channel speaker system according to an embodiment of the present general inventive concept;

Figure 3 is a flow chart illustrating a method for automatically setting a speaker mode in a multi-channel speaker system according to an embodiment of the present general inventive concept;

Figure 4 illustrates a first example of a signal processing block for automatically setting a speaker mode according to an embodiment of the present general inventive concept; and Figure 5 illustrates a second example of the signal processing block for automatically setting a speaker mode according to an embodiment of the present general inventive concept.

Detailed description of the preferred embodiments 6

Reference will now be made in detail to the embodiments of the present general inventive concept, examples of which are illustrated in the accompanying drawings, with similar reference numerals corresponding to similar elements. The embodiments are described below to explain the current general inventive concept with reference to the figures.

Figure 2 is a block diagram illustrating a device for automatically setting a speaker mode in a multi-channel speaker system according to an embodiment of the present general inventive concept.

Referring to Figure 2, the device includes an analog-to-digital converter (ADC) 210, a digital signal processor (DSP) 220, a digital-to-analog converter (DAC) 230, a power amplifier 240, a speaker 250, a microphone 260, and a microprocessor 270 .

The power amplifier 240 amplifies a broadband signal and supplies the amplified broadband signal to the speaker 250.

The loudspeaker 250 reproduces sound from the amplified broadband signal.

The microphone 260 converts the sound reproduced by the speaker 250 into an electrical signal.

The ADC 210 converts the electrical signal received from the microphone 260 into a digital signal. The DAC 230 converts a digital broadband signal generated by the DSP 220 into an analog broadband signal.

The DSP 220 generates the digital broadband signal, such as white noise, and supplies the digital broadband signal to the DAC 230. The digital broadband signal generated by the DSP 220 may be a predetermined signal, such as a test signal (e.g., a white noise signal or a pulse) noise signal). The DAC 230 converts the digital broadband signal 30 to the analog broadband signal and supplies the analog broadband signal to the amplifier 240. The DSP 220 also analyzes frequency characteristics of the digital signal received from the ADC 210, determines a reproduction power of the speaker 250 for each frequency band, and sets a speaker mode for the speaker 250 based on the determined reproducing power of the speaker 250. The DSP 220 then provides an output signal corresponding to the frequency characteristics of the speaker 250 by switching a plurality of channel signals select and combine via one or more filters and some of the plurality of channel signals according to a speaker mode control signal received from the microprocessor 270.

The microprocessor 270 receives information about the set speaker mode from the DSP 220 and supplies the speaker mode control signal to the DSP 220 for controlling the filter and channel selection / combination.

Figure 3 is a flow chart illustrating a method for automatically setting a speaker mode in a multi-channel speaker system according to an embodiment of the present general inventive concept. The method is described below with reference to the device of figure 2. An audio and / or video system (i.e. the multi-channel system) may comprise a low-frequency loudspeaker (S / W) for providing a low-frequency effect (LFE) channel, a front speaker for supplying a font channel, a center speaker for supplying a center channel, one or more environmental speakers for supplying one or more environmental channels and an environmental rear speaker for supplying an environmental rear channel. Other speakers and / or channels may also be provided in the system. The system may also include a plurality of speakers and / or channels that is less than the speakers and channels as described above. Each speaker in the system can have 8 a speaker mode and the bass speaker has a bass speaker mode. When the speakers in the system are set to Small, the bass speaker can provide low frequency components of channels (other than the LFE channel) that correspond to the other speakers when the bass speaker is set to "Yes". If the low-frequency speaker mode is set to "No", the low-frequency speaker only provides the LFE channel and does not provide the low-frequency components of the channels corresponding to the other speakers. When the other speakers in the system are set to Large and the bass speaker mode is set to "Yes", both the other speakers and the bass speaker deliver the low frequency components of the channels corresponding to the other speakers. When the low frequency speaker mode is set to "No", the low frequency speaker only provides the LFE channel. Thus, the embodiments of the general inventive concept determine reproducibility of frequency bands from the speakers and bass and switch channel signals, to prevent frequency components of the channels from being lost.

Referring to Figure 3, in operation 310, a broadband signal including a low frequency (e.g., white noise or impulse noise) is generated and supplied to the speaker 250 in response to a speaker mode setting command. The speaker mode setting command can be entered by the user or can be entered automatically when the audio and / or video system is turned on. The DSP 220 has frequency characteristic information of the broadband signal (i.e., it is predetermined and the frequency characteristic information can be stored).

The broadband signal reproduced by the loudspeaker 250 is supplied to the microphone 260.

9

The frequency characteristics of the broadband signal reproduced through the loudspeaker 250 (i.e., levels of all frequency bands) are analyzed in operation 320. The analyzed levels of the frequency bands of the broadband signal can be converted to a table.

A speaker mode is set by determining a frequency reproduction capability of the speaker 250 based on a frequency band level table. Method for automatically setting the speaker mode based on the frequency characteristics of the speaker 250 will now be described with reference to operation 342 to 398.

In operation 342, it is determined whether the broadband signal reproduced through the speaker 250 includes the low frequency components. The broadband signal reproduced is, for example, checked on a component of less than IKHz and -20dB.

If the broadband signal reproduced by the loudspeaker 250 comprises the low frequency components, it is determined whether the broadband signal comprises a middle frequency component and a high frequency component in operation 344. If the broadband signal comprises all 20 of the low, middle and high frequency components, it is determined that the speaker 250 is capable of reproducing all of the frequency bands in operation 350 and the speaker mode of the speaker 250 is set to "Large" in operation 352. If the broadband signal comprises only the low frequency component, it is determined that the speaker 250 is capable of only to reproduce the low frequency band in operation 360. Accordingly, it is determined that the speaker 250 is a low tone speaker in operation 360. If a speaker mode of the front speaker is "Small" (i.e., the front speaker supplies the middle and high frequency band), the bass-30 speaker is reset Id to a low-frequency speaker mode "Yes", in operation 362 and 364, such that the low-frequency speaker can provide low-frequency components of the front channel. In addition, if one of the speaker modes of other speakers receiving a center channel and environmental channels is "Small", the low-frequency speaker mode is reset to "yes" so that the low-frequency speaker can deliver the low-frequency components of those channels.

If the speaker modes of all other speakers except the bass speaker are "Large", it is determined whether a signal input is for the bass speaker. If it is determined that a signal input is for the bass 10-speaker, the bass is reset to "Yes". Otherwise, the low-frequency speaker mode can be maintained as (or set to) "No", since the low-frequency speaker only supplies the LFE channel.

If the broadband signal reproduced by the speaker 250 does not include the low frequency component, it is determined whether the broadband signal comprises the middle and high frequency components in operation 370. If the broadband signal comprises the middle and high frequency components, it is determined that the speaker 250 is capable of only reproduce the middle and high frequency bands in operation 20 372. If the speaker mode of the speaker 450 is set to "Large" in operation 380, then the speaker mode is reset (i.e. changed) to "Small" in operation 382. Similarly, the low frequency component of a channel signal received at the loudspeaker 250 is then diverted to the low frequency loudspeaker by changing the loudspeaker mode of the loudspeaker 250 to "Small". In addition, if the broadband signal reproduced through the speaker 250 does not include any of the low, mid and high frequency components, in operation 370, it is determined that the speaker 250 is not connected at all, in operation 374. As the speaker mode of the speaker 250 is set to "None" in operation 390, the 11 speaker mode is not changed to operation 392 and the channel signal supplied to the speaker 250 is mixed with another channel in operation 394. If the speaker mode of the speaker 250 is not set to " None "is set in operation 390 and if the speaker mode of the front 5 speaker is set to" Small "in operation 396, the bass sound mode of the bass sound is reset to" Yes "in operation 398. Since the front speaker is typically set to the Large speaker mode for outputting all frequency components, low frequency components from a front channel and other The channels mixed with the front channel are not output from the front speaker when the corresponding speaker mode is set to Small. Accordingly, the low frequency speaker mode of the low frequency speaker can be set to "Yes" such that the low frequency components of the front channel and other 15 channels mixed with the front channel can be further mixed with the low frequency effect channel (LFE ) and are output through the bass speaker. For example, when it is determined that the speaker 250 is in the "None" mode, a corresponding channel is mixed with the front channel and supplied to the front speaker. When the front speaker is set to Small, low frequency components cannot be output from the front speaker. Thereby, operation 398 sets the bass speaker mode to "Yes".

Finally, when the speaker modes of all speakers are set, the filter and channel combinations are switched based on the set speaker modes.

Figure 4 illustrates a first example of a signal processing block for automatically setting a speaker mode according to an embodiment of the present general inventive concept.

12

Referring to Figure 4, when the speaker modes of a front speaker, a center speaker, an environmental speaker, an environmental rear speaker, and a bass speaker are set to "Large", "Small", "Small", "Small" and "Yes" and if it is assumed that the center speaker is not connected, a center channel will be lost since the speaker mode of the center speaker is set to "Small". In other words, the signal processing block supplies the center channel signal to the center speaker, which is not connected.

However, according to the current embodiment of the current general inventive concept, the speaker modes are automatically set to "Large", "None", "Small", "Small" and "Yes", respectively. Therefore, by automatically determining that the speaker mode of the center speaker is "None", the center channel signal can be mixed into the front channel signal and supplied to the front speaker.

Figure 5 illustrates a second example of the signal processing block for automatically setting a speaker mode according to an embodiment of the present general inventive concept.

Referring to Figure 5, it is assumed that the speaker modes of a front satellite ("satellite") speaker, a center speaker, an ambient speaker, an ambient rear speaker, and a low-frequency speaker are set to "Large", "Small", "Small", "respectively." Small "and" Yes ". Here, the front satellite speaker may not be able to correctly reproduce low frequency signals. Therefore, in the conventional digital signal processor of Figure 1, the low frequency signal in a front channel would be lost, since the speaker mode of the front satellite speaker is set to "Large".

13

However, according to the current embodiment of the general inventive concept, the speaker modes are automatically set to "Small", "Small", "Small", "Small", and "Yes", respectively. Thereby, by automatically determining that the speaker mode of the front satellite speaker is "Small", the low frequency signal of the front channel is mixed to a low-frequency speaker channel signal (i.e., the LFE channel signal) and delivered to the low-frequency speaker instead of that it is delivered to the front satellite speaker. Although the various embodiments of the present general inventive concept describe specific speaker modes including the (Large,

Small, None, "Yes" and "No" speaker and bass speaker modes, it is to be understood that the current general inventive concept is not limited to these speaker modes. In particular, the embodiments of the present general inventive concept are more generally aimed at providing a plurality of channels and / or parts thereof to speakers that are determined to be suitable for the plurality of channels and / or parts thereof and the set speaker modes accordingly. Moreover, although the embodiments of the current general inventive concept are described herein with reference to an audio and / or video system, it is to be understood that the embodiments of the current general inventive concept can be used in an audio system without a video component.

The embodiments of the present general inventive concept can be implemented in computer programs and can be implemented in digital general-purpose computers that execute the computer programs using a computer-readable recording medium. Examples of the computer-readable recording medium include magnetic storage media (e.g., ROM, floppy diskettes, hard disks, etc.), optical recording media (e.g., 30 CD-ROMs, DVDs, etc.) and storage media such as carriers (e.g., 14 transmissions over the internet) . The computer-readable recording medium can also be distributed over networked computer systems so that the computer programs are stored and executed in a distributed manner.

As described above, according to embodiments of the present general inventive concept, by detecting the characteristics of speakers and automatically setting speaker modes in a multi-channel audio / video system, the sound of all of audio frequency bands can be listened without loss, convenience becomes 10 delivered to a user who is not familiar with speaker mode setting and can optimally reproduce sound by preventing user errors when setting the speaker modes.

Although some embodiments of the present general inventive concept have been shown and described, it will be understood by those of ordinary skill in the art that changes may be made in these embodiments without departing from the principles and spirit of the general inventive concept. as defined by the following claims and equivalents thereof.

1 o 3 0 4 A 1

Claims (33)

  1. A method for automatically setting a speaker mode in a multi-channel speaker system, comprising: generating a predetermined broadband signal and reproducing the broadband signal through a speaker; 5 determining a reproducing power of the speaker for each frequency band by analyzing frequency characteristics of the predetermined broadband signal reproduced through the speaker; and setting the speaker mode of the speaker based on the determined reproduction power of the speaker.
  2. The method of claim 1, wherein the predetermined broadband signal comprises one of a test white noise signal and a test pulse noise signal.
  3. 3. A method according to claim 1, wherein setting the speaker mode of the speaker setting of the speaker mode in one of a Small mode, a Large mode, a No mode, a bass speaker "Yes" mode and a low display speaker includes "No" mode.
  4. The method of claim 1, wherein the multi-channel speaker system includes a plurality of speakers with a plurality of corresponding speaker modes for determining frequency components applied to the plurality of speakers and at least one low-frequency loudspeaker with a low pitch. speaker mode, and wherein determining the reproducing power comprises determining whether any low frequency components of channels other than a low frequency effect channel are presented to the at least one low frequency speaker. 1030441
  5. 5 Large speaker mode, a Small speaker mode or a No speaker mode when the speaker is capable of reproducing all frequency components, middle / high frequency components and no frequency components respectively.
    The method of claim 1, wherein setting the speaker mode comprises setting the speaker mode of the speaker to one of a Large speaker mode, a Small speaker mode or a No speaker mode when the speaker 5 is capable of all frequency components, medium / high reproduce frequency components and not frequency components.
  6. The method of claim 5, wherein setting the speaker mode further comprises: setting a low tone speaker mode such that a low tone speaker receives a low frequency component of a channel corresponding to the speaker when the speaker mode is set on the Small speaker mode; and mixing the mid / high frequency components and the low frequency component of the channel corresponding to the speaker with another channel when the speaker mode is set to the No speaker mode.
  7. 7. Method according to claim 1, wherein determining the reproducing power of the loudspeaker comprises detecting whether the loudspeaker is properly connected in the multi-channel system and wherein setting the loudspeaker mode comprises diverting at least a part of a channel which the speaker is presented to another speaker when the speaker is not properly connected.
  8. 8. The method of claim 1, wherein determining the reproducing power of the speaker comprises: analyzing levels of frequency bands of the predetermined broadband signal; table the analyzed frequency band levels of the predetermined broadband signal; and determining the reproducing power of the speaker based on the frequency band levels set in the table.
  9. The method of claim 1, wherein the setting of the speaker mode comprises: determining a first speaker mode if the predetermined broadband signal comprises low and medium / high frequency components; determining a second speaker mode if the predetermined broadband signal comprises only the mid / high frequency component; determining a third speaker mode if the predetermined broadband signal comprises only a low frequency component; and determining a fourth speaker mode if the predetermined broadband signal does not include frequency components.
  10. A method according to claim 9, wherein determining the second speaker mode comprises supplying a medium and high frequency signal from a corresponding channel to the speaker and redirecting a low frequency signal from the corresponding channel to a low frequency speaker.
  11. 11. Method according to claim 9, wherein determining the fourth speaker mode comprises determining whether the speaker is not connected and mixing an audio signal from a corresponding channel that is assigned to the speaker with a different channel.
  12. 12. A method for automatically setting speaker modes for a plurality of speakers with a plurality of corresponding channels in an audio system, comprising: producing a predetermined broadband signal from the plurality of speakers; processing frequency characteristics of the plurality of loudspeakers using the produced broadband signal; setting speaker modes for the plurality of speakers 30 according to the frequency characteristics thereof; and setting a low-frequency speaker to receive low-frequency components from at least one of the corresponding channels with low-frequency components that cannot be output by the corresponding speakers.
  13. The method of claim 11, wherein setting the speaker modes comprises correcting set speaker modes that do not correspond to corresponding speakers.
  14. A method of a speaker mode setting device, comprising: analyzing frequency characteristics of a plurality of speakers to determine frequency components that are reproducible through the plurality of speakers; determining whether current speaker mode settings correspond to the analyzed frequency characteristics; and resetting speaker modes of a few of the plurality of speakers with current speaker settings that do not match the analyzed frequency characteristics.
  15. 15. A method of a speaker mode setting device, comprising: providing a first signal to be reproduced through a first speaker; providing a second signal to be reproduced via a second speaker; determining a status of the first speaker; and supplying at least a portion of the first signal to the second loudspeaker according to the status of the first loudspeaker so that said at least one portion of the first signal and the second signal are reproduced via the second loudspeaker.
  16. 16. Device for setting a speaker mode in an audio / video system with a plurality of channels, comprising: an amplifier for amplifying a signal; a loudspeaker for reproducing the amplified signal received from the amplifier; a digital signal processor for generating a predetermined broadband signal, for supplying the predetermined broadband signal to the amplifier, for analyzing frequency characteristics of the predetermined broadband signal reproduced through the speaker, and for setting the speaker mode of the loudspeaker based on the analyzed frequency characteristics of the loudspeaker; and a microprocessor for receiving information about the speaker mode set by the digital signal processor and for controlling filter and channel combinations based on the information about the set speaker mode.
  17. The apparatus of claim 16, wherein the digital signal processor comprises: means for generating the predetermined broadband signal and for delivering the predetermined broadband signal to the speaker; Means for analyzing the frequency characteristics of the predetermined broadband signal reproduced through the speaker and tabulating the levels of frequency bands of the predetermined broadband signal; means for setting the speaker mode of the speaker 25 based on the frequency band levels; and means for switching filter and channel combinations based on the set speaker mode.
  18. 18. Device as claimed in claim 16, wherein the digital signal processor detects whether the loudspeaker is correctly connected in the audio / video system and redirects at least a part of a channel presented for the loudspeaker to another loudspeaker when the loudspeaker is not properly connected.
  19. 19. Device as claimed in claim 16, wherein the digital signal processor comprises: a signal generating unit for generating the predetermined broadband signal and for supplying the predetermined broadband signal to the speaker; an analyzing unit for analyzing the frequency characteristics of the predetermined broadband signal reproduced through the loudspeaker and for tabulating the levels of frequency bands of the predetermined broadband signal; a setting unit for setting the speaker mode of the speaker based on the frequency band levels; and a switching unit for switching filter and channel combinations based on the set speaker mode.
  20. The apparatus of claim 16, wherein the predetermined broadband signal comprises a test white noise signal or a test pulse noise signal.
  21. 21. Device as claimed in claim 16, wherein the digital signal processor sets the speaker mode to one of a Small mode, a Large mode, a No mode, a low-frequency speaker "Yes" mode or a low-frequency speaker "No" mode.
  22. 22. Device as claimed in claim 16, wherein the multi-channel system comprises one of a 7.1-channel system or a 5.1-channel system and comprises a plurality of speakers with a plurality of corresponding speaker modes for determining frequency components presented for the plurality of speakers and at least one low tone speaker with a low-frequency speaker mode for determining whether one or more low-frequency components of channels other than a low-frequency effect channel are supplied to the at least one low-frequency speaker.
  23. The apparatus of claim 16, wherein the digital signal processor sets the speaker mode of the speaker to one
  24. The apparatus of claim 21, wherein the digital signal processor further sets a low-frequency speaker mode such that a low-frequency speaker receives a low-frequency component of a channel corresponding to the speaker when the speaker is set to the Small speaker mode, and the middle / high frequency components and the low frequency components of the channel 15 corresponding to the speaker mix with another channel, when the speaker mode is set to the No speaker mode.
  25. 25. An apparatus for automatically setting speaker modes in an audio system with a plurality of speakers for receiving a plurality of channels, comprising: a digital signal processor for detecting frequency characteristics of the plurality of speakers with the plurality of corresponding channels for setting speaker modes for the plurality of speakers according to their frequency characteristics, and for switching and combining the corresponding channels and parts thereof according to the set speaker modes such that no frequency components of the corresponding channels are lost.
  26. 26. Device as claimed in claim 25, wherein the digital signal processor sets a low-frequency loudspeaker to receive low-frequency components from one or more of the channels with low-frequency components that cannot be output by the corresponding loudspeakers.
  27. 27. Device as claimed in claim 25, further comprising: a detector for detecting a predetermined signal with a plurality of frequency components supplied by a selected speaker; and an A / D converter for converting the detected signal to a digitally detected signal, the digital signal processor analyzing the digitally detected signal to determine the frequency characteristics of the selected speaker.
  28. The apparatus of claim 25, wherein the digital signal processor corrects set speaker modes that do not match the frequency characteristics of the corresponding speakers.
  29. The apparatus of claim 25, wherein the digital signal processor sets the speaker mode in response to one of a command received from a user or a command generated when the audio system is turned on.
  30. 30. Device for setting a speaker mode, comprising: a measuring unit for measuring frequency characteristics of at least one speaker over a plurality of frequency bands; a setting unit for setting the speaker mode of the at least one speaker according to frequency bands reproducible by the at least one speaker; and a processing unit for supplying frequency bands reproducible through the at least one loudspeaker to the at least one loudspeaker and for supplying frequency bands non-reproducible through the at least one loudspeaker to another loudspeaker.
  31. 31. Device as claimed in claim 30, wherein the processing unit comprises one or more filters for filtering a plurality of channels corresponding to a plurality of speakers and for combining a few of the plurality of channels according to the set speaker mode.
  32. 32. A speaker mode setting device, comprising: a first processor for providing a first signal to be reproduced via a first speaker and a second signal to be reproduced via a second speaker; and a second processor for determining the status of the first speaker and for supplying at least a portion of the first signal to the second speaker according to the status of the first speaker such that said at least one portion of the first signal and the second signal can be reproduced through the second speaker.
  33. 33. A computer-readable medium comprising an executable code for automatically setting a speaker mode in a multi-channel speaker system, comprising: a first executable code for generating a predetermined broadband signal and for reproducing the broadband signal through a speaker; a second executable code for determining a reproducing power of the speaker for each frequency band by analyzing frequency characteristics of the predetermined broadband signal reproduced through the speaker; and a third executable code for setting the speaker mode of the speaker based on the predetermined reproducing power of the speaker. 1030441
NL1030441A 2004-11-18 2005-11-16 Method and device for automatically setting speaker modes in a multi-channel speaker system. NL1030441C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR20040094589 2004-11-18
KR20040094589A KR100611993B1 (en) 2004-11-18 2004-11-18 Apparatus and method for setting speaker mode automatically in multi-channel speaker system

Publications (2)

Publication Number Publication Date
NL1030441A1 NL1030441A1 (en) 2006-05-22
NL1030441C2 true NL1030441C2 (en) 2009-09-16

Family

ID=36386292

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1030441A NL1030441C2 (en) 2004-11-18 2005-11-16 Method and device for automatically setting speaker modes in a multi-channel speaker system.

Country Status (5)

Country Link
US (1) US20060104452A1 (en)
JP (1) JP2006148888A (en)
KR (1) KR100611993B1 (en)
CN (1) CN1777336A (en)
NL (1) NL1030441C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009008068A1 (en) * 2007-07-11 2009-01-15 Pioneer Corporation Automatic sound field correction device
JP2009130643A (en) * 2007-11-22 2009-06-11 Yamaha Corp Audio signal supplying apparatus, parameter providing system, television set, av system, speaker device and audio signal supplying method
CN102045622B (en) * 2009-10-16 2013-11-06 深圳Tcl新技术有限公司 Method and device for switching built-in and external loud speakers
KR101659626B1 (en) * 2010-06-03 2016-09-23 현대모비스 주식회사 Vehicle audio system for minimizing number of channels in amplifying stage by using signal mixing and bandwidth isolation
US9277341B2 (en) * 2013-03-15 2016-03-01 Harman International Industries, Incorporated System and method for producing a narrow band signal with controllable narrowband statistics for a use in testing a loudspeaker
TW201720345A (en) * 2015-12-11 2017-06-16 富奇想股份有限公司 Method for operating intelligent mirror, intelligent mirror functional module, and system
KR20180091222A (en) 2017-02-06 2018-08-16 삼성전자주식회사 Audio output system method for controlling the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666424A (en) * 1990-06-08 1997-09-09 Harman International Industries, Inc. Six-axis surround sound processor with automatic balancing and calibration
WO2001082650A2 (en) * 2000-04-21 2001-11-01 Keyhold Engineering, Inc. Self-calibrating surround sound system
EP1471772A2 (en) * 2003-04-25 2004-10-27 Pioneer Corporation Device and method for processing audio data, corresponding program and recording medium storing the program

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4052189B2 (en) * 2003-06-19 2008-02-27 ソニー株式会社 Acoustic device and acoustic setting method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5666424A (en) * 1990-06-08 1997-09-09 Harman International Industries, Inc. Six-axis surround sound processor with automatic balancing and calibration
WO2001082650A2 (en) * 2000-04-21 2001-11-01 Keyhold Engineering, Inc. Self-calibrating surround sound system
US20010038702A1 (en) * 2000-04-21 2001-11-08 Lavoie Bruce S. Auto-Calibrating Surround System
EP1471772A2 (en) * 2003-04-25 2004-10-27 Pioneer Corporation Device and method for processing audio data, corresponding program and recording medium storing the program

Also Published As

Publication number Publication date
NL1030441A1 (en) 2006-05-22
JP2006148888A (en) 2006-06-08
KR20060055132A (en) 2006-05-23
KR100611993B1 (en) 2006-08-11
CN1777336A (en) 2006-05-24
US20060104452A1 (en) 2006-05-18

Similar Documents

Publication Publication Date Title
US8233634B2 (en) Video/sound output device and external speaker control device
EP2009785B1 (en) Method and apparatus for providing end user adjustment capability that accommodates hearing impaired and non-hearing impaired listener preferences
KR100772042B1 (en) Voice-to-remaining audioVRA system in consumer applications
AU761690B2 (en) Voice-to-remaining audio (VRA) interactive center channel downmix
US6490009B1 (en) Electronic device for selecting inputs and outputs of audio-visual equipment
JP4946305B2 (en) Sound reproduction system, sound reproduction apparatus, and sound reproduction method
KR100671360B1 (en) Audio correction system and audio sound enhancement method
CN1248223C (en) Information signal representing apparatus
US7653203B2 (en) Vehicle audio system surround modes
JP4241443B2 (en) Audio signal processing apparatus and audio signal processing method
CA2388097C (en) Signal processing apparatus, signal processing method, program and recording medium
US6067361A (en) Method and apparatus for two channels of sound having directional cues
US7561935B2 (en) Integrated multimedia signal processing system using centralized processing of signals
EP2840712B1 (en) Loudness level control for audio reception and decoding equipment
KR100206786B1 (en) Multi-audio processing device for a dvd player
US20100195846A1 (en) Automatic level control circuit
KR100678929B1 (en) Method For Playing Multi-Channel Digital Sound, And Apparatus For The Same
US8054996B2 (en) Video/audio output device and external speaker control apparatus
KR100878004B1 (en) Acoustic field adjusting apparatus
FI105522B (en) Arrangement for home theater or other audio equipment
US7751914B2 (en) Signal processing apparatus
US6167140A (en) AV Amplifier
US8369531B2 (en) Audio reproducing apparatus and method thereof
JP2004166239A (en) Sound processing system with degraded signal optimization
US6195435B1 (en) Method and system for channel balancing and room tuning for a multichannel audio surround sound speaker system

Legal Events

Date Code Title Description
AD1A A request for search or an international type search has been filed
RD2N Patents in respect of which a decision has been taken or a report has been made (novelty report)

Effective date: 20090715

PD2B A search report has been drawn up
V1 Lapsed because of non-payment of the annual fee

Effective date: 20100601